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Stained Bathtub‏

Question: I have a really old tub that is stained and want to find out how to clean it.

I have scrubbed with chemicals and abrasives and bleached. I’ve even soaked in straight bleach.

Is there anything I can try? It’s a plastic type tub, not ceramic.

Answer: Plastic tubs have a very thin nonporous surface that in theory is stain proof (the same applies to porcelain). Once you apply abrasives and scouring pads you remove the protective layer and the stains permeate the plastic. Once that happens there is not much you can do to remove the stain - it would be like trying to remove stain from wood, you can't, all you can do is sand away the layer that is stained.